<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格练习</title>
</head>
<body>
    <table border="1px">
        <coption>讲师信息表</coption>
        <tr>
        <th>序号</th>
        <th>讲师</th>
        <th>课程</th>
        </tr>
        <tr>
            <td style="text-align: center">1</td>
            <td>传奇</td>
            <td>SQL</td>
        </tr>
        <tr>
            <td style="text-align: center">2</td>
            <td>硕博</td>
            <td>SRE</td>
        </tr>
        <tr>
            <td style="text-align: center">3</td>
            <td>强哥</td>
            <td>微服务</td>
        </tr>
    </table>

<table border="1px">
    <tr>
        <td>1-1</td>
        <td>1-2</td>
        <td>1-3</td>
        <td>1-4</td>
    </tr>
    <tr>
<!--        colspan="n"跨列，横着合并，从当前单元格开始向右合并n个单元格-->
<!--        rowspan="n"跨行，竖着合并，从当前单元格开始向下合并n个单元格-->
        <td colspan="2" style="text-align: center">2-1</td>

        <td>2-3</td>
        <td rowspan="3">2-4</td>
    </tr>
    <tr>
        <td>3-1</td>
        <td>3-2</td>
        <td>3-3</td>

    </tr>
    <tr>
        <td>4-1</td>
        <td>4-2</td>
        <td>4-3</td>
    </tr>

</table>

<table border="1px" style="border-collapse: collapse">
    <coption>购物车</coption>
    <tr>
        <th>商品编号</th>
        <th colspan="2">商品名称</th>
        <th>商品价格</th>
    </tr>
    <tr>
        <td>1</td>
        <td colspan="2">小米air</td>
        <td>5877</td>
    </tr>
    <tr>
        <td>2</td>
        <td colspan="2">华为遥遥领先</td>
        <td>8877</td>
    </tr>
    <tr>
        <td>总价</td>
        <td colspan="3" style="text-align: center">10000</td>
    </tr>
</table>
</body>
</html>